Quantum physics lies at the heart of understanding the behaviour of matter and radiation on the smallest scales. It therefore underlies not only the technology that surrounds us every day, but the fundamental structure and behaviour of everything in the Universe. This book introduces the concepts of quantised energy and quantum uncertainty, and offers a first look at the quantum world. A student at A-level, International Baccalaureate, or K-12 level will be stretched by this content and teaching. If in doubt, download the free sample.